Repeatedly pressing and disabling the mouse and keyboard?

Question

Keyboard

There is a Supermicro x9qri-f + 2 cpu e5 4650v2 mother, + two go to RAM 8 sticks of 16 GB each, two are heated hwinfo shows 127c xs pulled out and without them the problem remains, the problem is that the mouse and keyboard keys are constantly sticking so yes so 10 minutes to unlock the account. I tried it with another mouse and keyboard, I tried it on another PC, there are no problems with devices, they are new, I installed a clean OS, it didn’t help, there is a power supply from a corsair on 950w with one 8pin cpu + 8pin adapter with a molex in the BIOS, there are no problems. Also, every 10 seconds, the keyboard and mouse are not turned off by antivirus programs at the same time. Right now, it remains to run Casper through a USB flash drive. Also, out of the strange, sometimes the OS freezes when loading the OS or when loading the BIOS after reinstalling, the problem disappeared, it hung on post code 92. Not seen lately. Tell me where to drop